You can do the same while setting Speakers to Large with LFE + Main if you have a denon with audyssey.
People don't talk aboutthis much often.
There is a LFE setting which is called LFE + Main which allows you to set crossovers even when speakers are set to Large.
Sent from my LM-G710 using Tapatalk
The LFE+Main setting is well known, at least here at Audioholics.com, just do a key word search you will see what I mean.
The bottom line is, if you prefer the effects of LFE+Main and speakers large settings then go for it, but if you were to aim for accuracy, neutrality then I am confident LFE and small (80 Hz or high XO) will do much better. I know so because I have done numerous experiment using different settings, and confirm the effects/results with REW.
If you just consider the logic and facts (specs):
Elec Debut 6.2 specs - Nominal 6 ohms, 87 dB/2.83 V/1m, max power input 120 watts, 6.5" bass driver
ASW250 - 100 W avg., 250 W peak, 10" woofer
You can see the benefits if you off load the Elac in the <80 Hz range. They will thank you, and will sing better in the 80-250 mid bass range. The AVR, especially if you have a lower mid range model, will also thank you because they won't be working as hard. Overall, your system will do better in the mid and high range as well if you set XO to 80 Hz. In fact, I would go with 100 Hz for those speakers.
However, perceived sound quality is largely a subjective thing, so if you prefer the LFE+Main and "large" settings, then go for it and none of us can change you mind. We can only offer opinions and theoretical benefits of one vs the other.
By the way, Stereophole measured the B6, you B6.2 should be similar. Below is the impedance/phase angle vs freq graph. Your AVR will definitely be happier if you set them to "small" and XO at 100 or even 110 Hz. Ask
@AcuDefTechGuy about why he set his speakers (bigger than yours I assume..
) to small.
https://www.stereophile.com/content/elac-debut-b6-loudspeaker-measurements